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Cornerstone · Grades 3–5 Keystones #1 12 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 12 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 1⁄3

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 62

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 1:4:3

    Answer: 24, 96 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 31, 8, 26, 28, 25, 47, 28, 46. Give your answer to 2 decimal places

    Answer: 29.88

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